<!DOCTYPE html>
<html lang="zh-CN">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>趣写启动中...</title>
  <style>
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Arial', sans-serif;
    }
    
    body {
      background: linear-gradient(135deg, #1e1e1e, #292929, #1e1e1e);
      display: flex;
      justify-content: center;
      align-items: center;
      height: 100vh;
      overflow: hidden;
    }

    .container {
      text-align: center;
      position: relative;
    }

    .logo {
      font-size: 28px;
      font-weight: bold;
      color: #fff;
      text-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
      animation: fadeIn 1.5s ease-in-out, fadeOut 1s ease-in-out 3s forwards;
    }

    .loading-bar {
      width: 180px;
      height: 4px;
      background: rgba(255, 255, 255, 0.2);
      border-radius: 2px;
      overflow: hidden;
      margin: 20px auto 0;
      position: relative;
    }

    .loading-bar::before {
      content: "";
      display: block;
      width: 50%;
      height: 100%;
      background: #4db8ff;
      position: absolute;
      left: 0;
      animation: loadingAnimation 2.5s infinite;
    }

    @keyframes fadeIn {
      from { opacity: 0; transform: scale(0.9); }
      to { opacity: 1; transform: scale(1); }
    }

    @keyframes fadeOut {
      to { opacity: 0; }
    }

    @keyframes loadingAnimation {
      0% { left: -50%; }
      50% { left: 50%; width: 60%; }
      100% { left: 100%; width: 50%; }
    }
  </style>
</head>
<body>
  <div class="container">
    <div class="logo">趣写 启动中...</div>
    <div class="loading-bar"></div>
  </div>
</body>
</html>
